If you did not live in Illinois when the pension income was received then you do not file an Illinois state income tax return. The pension income would be reported on your Alabama return.
You should have received a Form 1099-R for the pension income. Report the Form 1099-R in the federal section of the program, this will flow to the Alabama state tax return.
To enter, edit or delete a form 1099-R -
Click on Federal Taxes (Personal using Home and Business)
Click on Wages and Income (Personal Income using Home and Business)
Click on I'll choose what I work on (if shown)
Scroll down to Retirement Plans and Social Security
On IRA, 401(k), Pension Plan Withdrawals (1099-R), click the start or update button
Or enter 1099-r in the Search box located in the upper right of the program screen. Click on Jump to 1099-R
On the screen Did you get a 1099-R in 2023? Click on Yes
On the next screen click on Continue
On the screen Let's import your tax info Click on Change how I enter my form
On the screen How do you want to add your 1099‑R? Click on Type it in myself
On the screen Who gave you a 1099-R? select the type of 1099-R you received and Continue
